Knob attachment



(No Model.) I Y O. H. BEEBE.

KNOB ATTACHMENT.

Patentd Nov. 24, 1885.

UHHHHHHHH the threaded spindle.

UNITED STATES CHARLES H. BEEBE, OF NORVVIOH, CONNECTICUT.

KNOB ATTACHMENT.

SPECIFICATION forming part of Letters Patent No. 331,112, dated November 24:, 1885.

' Application filed April 6, 1855. Serial No. 161,304, (No model.)

To aZZ whom it may concern:

Be it known that 1, CHARLES H. BEEBE, a citizen of the United States, residing at Norwich, in the county of New London and State of Connecticut, have invented a certain new and useful Improvement in Knob Attachments, of which the following is a specification, reference being bad to the annexed drawings, in which- Figure 1 represents a mortise'loek case in place in a door and my improved form of knob-attaching device properly applied, one of the knobnecksbeing cut away to show more clearly said improvement. Fig. 2 is a top view of the knob necks, spindle, and locking device. Fig. 3 shows end and side views of the collar 0 and its locking-latch. Fig. 4 is an inner end View of knob-neck a. 7

My invention relates to that class of knob attachments in which a square spindle threaded at its corners or angles is screwed into an internally-threaded knob -neck for convenience in adjusting the knobs to doors of any reasonable thickness, my immediate object being to furnish a simple device for preventing the knob-necks from unscrewing while in the act of rotating the knob to operate the bolt.

Referring to the accompanying drawings, the letter A represents a portion of a door, and B the lock-case having in proper position the customary form of hub G, provided with a central angular opening to receive the operating-spindle I). This spindle b is preferably secured rigidly in knob-neck a, and that portion which extends through-the hub, when in place, is threaded at its angles, as shown. The knob-neck a, is threaded internally to fit 0 represents a collar of about the diameter of the knob-necks, having secured pivotally in its upper slotted side a latch, cl, whose free end extends well outward from said collar. Collar c is not threaded to engage the square spindle, but is formed with a square central opening adapted to slide loosely on the square spindle. The knob-neck a has one or more chambers, e, at the end which confronts the movable collar 0, said chambers being of such a size and so located that when the several parts are in their respective places and adjusted to the desired positions, the latch d may be lowered into one of the chambers e to securely lock the rotatable knob-neck to the non-rotatable collar 0.

To hold the latch d in engagement with chamber 0, I have shown a spring, 71, which acts with a constant tendency to force the free endofthelatch towardspindleb. Thisspring, however, is not absolutely necessary to the satisfactory working of my device, as the escutcheon E,when in place and fastened to the door, covers the latch and also prevents it from leaving chamber 6.

I am aware of the patent to Fenn, No. 112,134, granted February 28, 1871, and do not broadly claim a sliding sleeve on a threaded square spindle.

\Vhat I do claim as my invention is In combination with a spindle threaded at its angles, a collar longitudinally movable on said spindle and provided with a pivoted locking-latch, as described, an internally-threaded knob neck adapted to engage the threaded spindle, and provided with one or more chambers, e, to receive the locking latch when properly adjusted, and means for holding said latch in engagement with said chamber, all substantially as and for the purpose specified.

CHARLES H. BEEBE.

Witnesses:

FRANK H. ALLEN, TYLER J. HOWARD. 

